... Because yes, we apparently need one of those!
The BBC have posted a blog update revealing that whilst they're not quite telling when they'll broadcast a trailer for The Day of The Doctor, but they're willing to say that it's coming... soon:
We recently announced a raft of programmes that will be help celebrate the Doctor’s anniversary but stand by for several surprises en route to the 50th… One of them is a brand new trailer, specially written and shot for The Day of the Doctor. It’s never been seen before and is currently in post-production. Bold, brilliant and unexpected, it promises to be an ideal way to look forward to the big day – 23 November.
Presumably this means that this is neither the trailer shown at Comic-Con (which, to the anger of some fans, will probably stay exclusive) nor the teaser that aired at the Edinburgh International Television Festival last month, but a wholly new trailer - perhaps one with specially shot footage for it, considering that the BBC also shared this new picture from 'behind the scenes of its production':
What they did reveal is that tonights broadcast of Atlantis' premiere - at 8.25 pm on BBC One - will feature débuts of Idents at the front and back end for the BBC's 50th Anniversary programming. For those unfamiliar with the term, an Ident (or as it's sometimes known, a Stinger) is a short clip played before or after a show whilst a Continuity Announcer reads out what's ahead in the TV schedule. Whilst rare, it's not uncommon for a specific programme to receive it's own Ident on the BBC - Doctor Who has had the honour before, taking over BBC One's Christmas Idents in 2009 to advertise The End of Time:
(Here's a bonus version featuring a chilling continuity narration from Tennant himself, aired just before The End of Time Part Two!)
The Idents will be available to view online shortly after.